Propagation of two solitons in electron acoustic waves with superthermal electrons
Department of Mathematics, West Bengal State University - Barasat, Kolkata-700126, India
Received: 28 January 2013
Accepted: 16 February 2013
A theoretical investigation is carried out for understanding the nonlinear properties of electron acoustic solitary waves (EASWs) in an unmagnetized, collisionless plasma consisting of a cold-electron fluid and hot electrons obeying κ velocity distribution, and stationary ions in nonplanar geometry. By making use of the reductive perturbation technique, nonlinear nonplanar (cylindrical/spherical) Korteweg-de Vries (KdV) equations are derived to study the propagation of two solitons. Computational investigations have been performed to examine the superthermal effects on the nonlinear waves. It is found that the propagation of two solitons is affected by superthermal hot electrons and other plasma parameters.
PACS: 52.35.Fp – Electrostatic waves and oscillations (e.g., ion-acoustic waves) / 52.35.Sb – Solitons; BGK modes
© EPLA, 2013